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 TM 55-1905-220-14-11
5-155. LOUDHAILER - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
TESTS (Cont)
Table 1. Public Address Set Type AN/PIC-2, Troubleshooting -
Resistance Measurements.
From
Test
Component
Normal
Point
Symbol
Indication
Cause of Abnormal Indication
B
Thru R3
470
R3 defective
B
Thru R4
220
R4 defective
A
Thru R2
1300
R2 or shunted components defective
A
Thru R5
950
R5, C2 or shunted components
defective
A
Thru R6
10
R6 defective
A
From Tl-l
700
T1 primary defective
B
From T1-4
1900
R7, T2 primary, or shunted compo-
nents defective
A
From T2-3
11
T2 secondary defective
or T2 -3
A
Thru R10
0.3
R10 defective
A
From C1 100,000
C1 defective
neg.
Min
B
Thru R8
7,000
R8 defective
A
From L1-2 1,000
L1, R9, R11,T2 secondary or RT1
defective
A
From T1-4
1,000
T1 secondary or shunted components
defective
Condition of Test
Meter: Any standard 20,000 ohm/volt V.O.M.
Test Point A - Positive bus
Test Point B - Negative bus
Transistors removed from circuit
All readings are in ohms
5-1604
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